You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@spark.apache.org by "Josh Rosen (JIRA)" <ji...@apache.org> on 2015/05/08 21:17:04 UTC
[jira] [Commented] (SPARK-7448) Implement custom bye array
serializer for use in PySpark shuffle
[ https://issues.apache.org/jira/browse/SPARK-7448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14535316#comment-14535316 ]
Josh Rosen commented on SPARK-7448:
-----------------------------------
This is a change that would be nice to performance benchmark. It might require a large job, such as a huge flatMap, before we see any significant improvement here.
> Implement custom bye array serializer for use in PySpark shuffle
> ----------------------------------------------------------------
>
> Key: SPARK-7448
> URL: https://issues.apache.org/jira/browse/SPARK-7448
> Project: Spark
> Issue Type: Improvement
> Components: PySpark, Shuffle
> Reporter: Josh Rosen
>
> PySpark's shuffle typically shuffles Java RDDs that contain byte arrays. We should implement a custom Serializer for use in these shuffles. This will allow us to take advantage of shuffle optimizations like SPARK-7311 for PySpark without requiring users to change the default serializer to KryoSerializer (this is useful for JobServer-type applications).
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org